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Finding the Fourth Proportional to 357.08, 535.81 and 270.39

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Solution

The fourth proportional to 357.08, 535.81 and 270.39 is: 405.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.08 : 535.81 = 270.39 : x
  2. Step 2: Convert to fraction form
    357.08/535.81 = 270.39/x
  3. Step 3: Cross multiply
    357.08x = 535.81 × 270.39
  4. Step 4: Simplify right side
    357.08x = 144,874.98
  5. Step 5: Solve for x
    x = 144,874.98/357.08
  6. Step 6: Final answer
    x = 405.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.